User Manual

DTC COMMUNICATIONS, INC.
30
Using Antennas with the VBS/VBL-250 Video Transmitter
APPENDIX A
Bodyworn applications:
When the VBS/VBL-250 video transmitter is to be worn on the body,
only the DTC VidiWire antenna system should be used to insure that appropriate RF
exposure levels are not exceeded. This antenna has been extensively tested and
found to be safe when used as directed. The antennas used in the VidiWire system
are clearly labeled as to which side of the antenna should be placed against the
body. These directions must be observed to insure safe and effective operation. In
addition, there are steps that the user may take to further reduce their RF exposure.
Turning the transmitter OFF when it is not needed will reduce the actual time that the
user is exposed to the RF signal. For optimum performance, keep arms, hands, etc.
away from the side of the antenna that faces away from the body.
Non-portable applications:
In mobile or fixed location applications, any suitable antenna may be
used. However, to insure safe operation, it is imperative that proper spacing be
maintained between the radiating surface of the antenna and
any persons body.
Except as described above for bodyworn applications, no antenna should be placed
closer than 8 inches (20 cm) to the body. To insure that proper spacing is main-
tained, locate the transmitter or arrange physical barriers in such away that people
are prevented from approaching too closely.